Clamp and tightener for concrete forms



Nov. 15, 1927.

I 1,648,995 c. PHILLIPS CLAMP AND TIGHTENEK FOR CONCRETE FORMS Filed Dec. 28, 1925 Patented Nov. 15,1927.

UNITED STATES-I PATENT OFFICE.

'onn'srnn reruns} or PORTLAND, onneon.

m 'rremn'nn non concnn'rn roams.

Application filed December as, 1926. Serial in. 157,502.

My invention relates to improvements in concrete construction, having as its primary object the locating and tightening of the tie wires asordinarilyusedupon the wooden forms in concrete construction.

.The device consists primarily of a base, a

pivotal protfction disgosed' upon theside of the base to e dispo adjacent the concrete term and a column oppositely d sposed to that of the pivotal proJection, sa1 column having outwardly taperm side walls'and terminating in an open en ed slot, through which the tie wires are made to pass, said slot being proportioned to admit of the enin having outwardl tapering side walls disall tit

h the osed upon the co umn associated with the base topermit of the easy removal of the device from the tie wires when so desired.

A still further objectv of my device, consists inhavin a pivotal projecting element associated wi the form side of the'base toposition the device and maintain the same in a relativeposition to the form "to prevent the lateral movement of thedevice in relation to the form during the tightening process to be administered to the clampingwires. A still further object of my invention con: sists of providing .anopen ended slot terminating the outward end of the column associated with the base to permit of the free and ea lac'ement of the wires within the slot an the final admissionof "a tightening rod or tool within the slot to facilitate the rotation of the device and at the same time to maintain the wireswithin the slot during the tightening process.

With these and incidental objects in view, the invention consist in certain-novel features of construction and combination of parts, the essential elements of which are set' forth in the appended claims, and a preferred form of embodiment of which is hereinafter shown with reference to thedrawin which accompany 'and 'form a part of" this specification.

In the drawings: v Fi 1 is a longitudinal side elevation of evice. Fig. 2 is a plan view, taken on line 22 of Fig. 1, looking in the direction indicated.

the initial stage of attaching the same.

Fig. 3'is a top. plan view, taken on line e s oi Fig. 1, looking in the direction indiea c s Fig. 4 is a lolhlgit'udinal plan view of a; so concrete form,

ustrating my devices inplace upontheform.

Fig. 5 is a cross section view, taken on line 5-5 of Fig. 4, looking in the direction indicated. r

Fig. 6 is a cross section View, taken on line 6--6 of Fig. 4, looking in the direction indicated. I

Like reference characters refer to like parts throughout the several views;

generally been composed. of two or more arts, and wherein once the tire wires have een t ghtened by the device, more or less trouble has been experienced in the disasso- 'ciation'of the device from the'wire.

In my new and improved devicethe same is composed of one piece only, and wherein 'means'ha's been provided for the maintain-I ingof the device in a relatively fixed position upon the form to act as a pivotal center about which the same may be rotated during the tightening process This pivotal pro- I e'ctxon' serves a dual purpose in that it acts'85 as apivotal point about which the same may be rotated and at the same time permits of an attachment of the device to the form'by driving the.- pivotal point into the formjin My device is primarily intended for use upon concrete forms made of wood in which wall members 1 and 2 of the forms are to be tied together. Thi's'is accomplished by the passage'of a tie wire 3, from oppositely disposed walls of the forms and thence passmg the same about a rail 4. My device consists primarily 0t abase 5, preferably made circu arin form and having a pivotal point 6, disposed oh the form engaging side of the base. This ivotalpointis preferably made conical in cm and disposed centrally -of the base and of a 's'uflicient length and taper to cause the device to be "maintained upon the form when the. projecting pivotal element is driven into the form structure. A column 7 is disposed upon the opposite side of the base 5, having outwardly tapered side walls the same terminating in an open ended slot 8 through which the form wires are no made to pass. The side walls 9 and 10 of the open ended slot are made sufliciently Y AI wireshave been used wherein the same have 1 strong to permit of the entrance of a tightening rod therebetween. When the device has been turned sufiiciently to place the reuired tension u on the wire 3, a fastening e ement is then riven through the opening 11 within the base 5, into the adjacent form member to maintain the same in relative fixed position upon the rail form. Where the forms are large and a very substantial tension is required, within the tie wires.3,'I have found it necessary at timesto place engaging elements 12 in the side walls of the co umn and at such times to use a specialwrench for tightening that they ma be made to engage with the column an the engaging elements 12.

In devices of this kind the reclaiming of the device after the same has been used is.

important and unless the device can be disassociated from the wire the labor cost does not justify the same. In my new and improved device the open ended slot in con- .nection with the outwardly sloping side walls of the column makes it very easy to remove the device from the wire after the wires have been cut and to reclaim the same. The fact that the device is made of a single piece facilitates its recovery and continued combination of a base, a projection disposed upon the form side of the base, a column disposed centrally of the opposite side of cylindrical in form, a central projection disposed upon one side of the base and a column and means in the base adapted to maintain the device'in fixed position.

4'. In a device .of the class described, the combination in a one piece device of a base member, a projection disposed upon one side of the base to permit of pivotal engagement with a concrete form, a colunm oppositely disposed upon the base to the pivotal projection having outwardly tapering side walls, an open ended slot disposed in the column to permit of engagement with concrete form tie wires and with a ti htening bar and means disposed in the base or maintaining the device fixed relative to the forms when the tie wires are tightened.

5. In a device of the class described, the combination in a one piece device of a base member, a projection disposed upon the form engaging side of the base to permit of pivotal engagement of the base with the concrete form, a column oppositely disposed upon the base to the pivotal projection, said column having outwardly sloping side walls, an open ended slot, terminating the column and engaging elements disposed upon the outer periphery of the column to facilitate the rotation of the device to tighten the tie wires.

CHESTER PHILLIPS. 

